WriteFlow - AI Writing Assist
Japanese writing with AI help
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
WriteFlow is a writing app for Japanese-language creative writers. The app's interface and AI assistant are in Japanese.
- Write on Japanese manuscript paper (genkō yōshi), vertically or horizontally
- Consult the AI assistant without leaving your manuscript: brainstorm plot twists, rephrase passages with richer sensory detail, and check typos and notation consistency
- Register your story's synopsis, characters, and world rules so the AI answers consistently with your setting
- Daily quotas calculated backward from your deadline, recorded automatically from how much you wrote
- Focus timer with Live Activities
Premium (monthly auto-renewing subscription): unlimited works, AI assistant (up to 100 requests per month), vertical writing, themes, iCloud backup.
Payment is charged to your Apple ID. The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Manage or cancel in your App Store account settings.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The Premium screen is now shown once when you open the app (not shown to subscribers). New subscribers can try Premium free for 7 days.
The developer, YONONAKA LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- YONONAKA LLC
- Size
- 3.1 MB
- Category
- Productivity
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and Japanese
- Age Rating
13+
- 13+
- Infrequent
Cartoon or Fantasy Violence
Realistic Violence
Profanity or Crude Humor
Mature or Suggestive Themes
Horror/Fear Themes
- In-App Purchases
Yes
- Premium (Monthly) $5.99
- Copyright
- © 2026 YONONAKA LLC